Home / 7,789.20-11,679.68-3,401.52

Finding the Fourth Proportional to 7,789.20, 11,679.68 and 3,401.52

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Solution

The fourth proportional to 7,789.20, 11,679.68 and 3,401.52 is: 5,100.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,789.20 : 11,679.68 = 3,401.52 : x
  2. Step 2: Convert to fraction form
    7,789.20/11,679.68 = 3,401.52/x
  3. Step 3: Cross multiply
    7,789.20x = 11,679.68 × 3,401.52
  4. Step 4: Simplify right side
    7,789.20x = 39,728,665.11
  5. Step 5: Solve for x
    x = 39,728,665.11/7,789.20
  6. Step 6: Final answer
    x = 5,100.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.